<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>计算属性</title>
</head>

<body>
   <div id="example">
       <p>Original message:"{{message}}"</p>
       <p>Computed reversed message:"{{reversedMessage}}"</p>
   </div>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script>
      var vm = new Vue({
          el:'#example',
          data:{
              message:'Hello'
          },
          computed:{
              //计算属性的getter
              reversedMessage:function(){
                  //this指向vm实例
                  return this.message.split('').reverse().join('')
              }
          }
      })
    </script>
</body>

</html>